CM15 postcode district

Postcodes and sectors

596 of the district's 830 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 51.64486, 0.30311, which locates the district, not a building.

Companies registered in CM15

Companies House lists 2,230 companies with a registered office in CM15; 698 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for CM15

• Essex
• Eastern
• Brentwood
• Kelvedon Hatch
• Doddinghurst
• Wyatt's Green
• Hook End
• Stondon Massey
• Mountnessing
• Doddinghurst Common
• Swallows Cross
• Epping Forest
• Bentley
• Crow Green
• Paslow Wood Common

Roads filed under CM15

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abbots Close
• Albany Road
• Alderton Close
• Alexander Lane
• All Saints Close
• Alwyne Avenue
• Apple Tree Close
• Apple Tree Crescent
• Ardleigh Court
• Ash Close
• Ashwells Court
• Ashwells Road
• Bakers Meadow
• Balmoral Road
• Barley Field
• Barn Mead
• Baymans Wood
• Baymans Woods
• Beads Hall Lane
• Beehive Chase
• Bentley Mews
• Birley Grange
• Bishop's Hall Road
• Bishops Walk
• Blackmore Road
• Blenheim Road
• Brentwood Place
• Briarwood
• Broad Meadow
• Brook Lane
• Broomwood Gardens
• Burland Road
• Byrd Mead
• Cannons Mead
• Carisbrook Road
• Cathedral Place
• Catherine Close
• Chandlers Walk
• Channon Drive
• Chelmsford Road
• Chivers Road
• Church Close
• Church Crescent
• Church Lane
• Church Road
• Church Walk
• Clarence Road
• Cliveden Close
• Coombe Rise
• Corcorans
• Cornwall Road
• Crescent Drive
• Crossby Close
• Crossways
• Crow Green
• Crow Green Lane
• Crow Green Road
• Daffodil Avenue
• Dagwood Lane
• Danbury Close

Check an address in CM15

Check an address in CM15

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CM15" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CM15

What does a CM15 postcode tell you?

That the address lies in the CM15 district of the CM (Chelmsford) postcode area, and the place OS Open Names most often lists first for its postcodes is Brentwood. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 596 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest CM15

• CM143.0 km
• CM134.1 km
• CM46.8 km
• RM37.2 km
• CM127.9 km
• CM59.4 km
• RM29.6 km
• RM49.9 km
• RM1110.1 km
• RM1410.1 km
• CM1110.2 km
• RM510.7 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids